Category:Olenekian first appearances
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Biological taxa that first appeared during the Olenekian Age, the geologic time, between 251.2 and 247.2 million years ago, during the Early Triassic Epoch.
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This category has only the following subcategory.
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Pages in category "Olenekian first appearances"
The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes.
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